33861440 has 28 divisors (see below), whose sum is σ = 80633316. Its totient is φ = 13544448.

The previous prime is 33861437. The next prime is 33861461. The reversal of 33861440 is 4416833.

It can be written as a sum of positive squares in 2 ways, for example, as 24522304 + 9339136 = 4952^2 + 3056^2 .

It is a super-2 number, since 2×33861440² = 2293194237747200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52589 + ... + 53228.

Almost surely, 2^33861440 is an apocalyptic number.

It is an amenable number.

33861440 is an abundant number, since it is smaller than the sum of its proper divisors (46771876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

33861440 is a wasteful number, since it uses less digits than its factorization.

33861440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105834 (or 105824 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 33861440 is about 5819.0583430655. The cubic root of 33861440 is about 323.5205019228.

The spelling of 33861440 in words is "thirty-three million, eight hundred sixty-one thousand, four hundred forty".